created forgejo service

modules/nixos-modules/server/forgejo.nix

@@ -0,0 +1,36 @@
+{
+  lib,
+  config,
+  ...
+}: let
+  forgejoPort = 8081;
+in {
+  options.host.forgejo = {
+    enable = lib.mkEnableOption "should forgejo be enabled on this computer";
+    subdomain = lib.mkOption {
+      type = lib.types.str;
+      description = "subdomain of base domain that forgejo will be hosted at";
+      default = "forgejo";
+    };
+  };
+
+  config =
+    lib.mkIf config.host.forgejo.enable
+    {
+      enable = true;
+      database = {
+        type = "postgres";
+        socket = "/run/postgresql";
+      };
+      lfs.enable = true;
+      settings = {
+        server = {
+          DOMAIN = "${config.host.forgejo.subdomain}.${config.host.reverse_proxy.hostname}";
+          HTTP_PORT = forgejoPort;
+        };
+      };
+      host.reverse_proxy.subdomains.${config.host.jellyfin.subdomain} = {
+        target = "http://localhost:${toString forgejoPort}";
+      };
+    };
+}